MRI brain

Modality:
MRI

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T2

The ventricles have significantly reduced in size and the mass in the dorsal midbrain is still visible, again with peripheral hemosiderin and internal heterogeneous signal. There is no restricted diffusion. No surrounding oedema.

A prominent flow void is seen through the floor of the third ventricle in keeping with a third ventriculostomy. This is best seen on axial T2 images.

3 study questions available

Q: How was this patients obstructive hydrocephalus treated?
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MRI brain - post op

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The previously described cavernous malformation has been excised. Hemosiderin staining of the resection margins remains. Flow void through the floor of the third ventricle is still easily visible.

Case Discussion

Cavernous malformations (also known as cavernomas or cavernous haemangiomas) can occur anywhere in the brain or spinal cord but have fairly consistent imaging findings. When larger or in unexpected locations they can lead to confusion.

In themselves they are non-aggressive, but they do have a predilection to repeatedly leak / haemorrhage. Complete resection is curative.